Gravel Pit Pond Dam dam
Gravel Pit Pond Dam
Gravel Pit Pond Dam, located in Southbury, Connecticut, is a state-owned structure that serves primarily for recreational purposes. The dam, made of concrete, stands at a height of 14 feet and spans a length of 471 feet, containing a storage capacity of 93 acre-feet. Situated on Transylvania Brook, the dam's reservoir covers an area of 11 acres and serves a drainage area of 5.21 square miles.
Despite being classified as having a significant hazard potential, the dam's condition assessment was rated as fair during its last inspection in April 2015. With a inspection frequency of 7 years, the dam is under the jurisdiction of the Connecticut Department of Energy and Environmental Protection (DEEP), ensuring regular regulatory oversight, permitting, inspection, and enforcement. While no major modifications have been recorded in recent years, the dam continues to play a vital role in providing recreational opportunities in the region.
Water resource and climate enthusiasts will find Gravel Pit Pond Dam an intriguing site to monitor, given its location on Transylvania Brook and the potential for recreational activities in the area. With a fair condition assessment and state regulation in place, the dam serves as a key structure in managing water resources and providing a recreational outlet for the community. Stay tuned for further updates on this concrete dam and its role in maintaining the balance between water conservation and recreational interests in Southbury, Connecticut.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Gravel Pit Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Pomperaug River At Southbury | 153 cfs | → |
| Pootatuck R At Sandy Hook | 59 cfs | → |
| Weekeepeemee River At Hotchkissville | 44 cfs | → |
| Nonewaug River At Minortown | 27 cfs | → |
| Still River At Route 7 At Brookfield Center | 148 cfs | → |
| Housatonic River At Stevenson | 484 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Gravel Pit Pond Dam.
Boat launches
- Lake Lillinonah (Pond Brook)
- Lake Zoar
- Lake Lillinonah
- Grove Street 251, New Milford
- Candlewood Lake (Lattins Cove)
- Danbury Boat Launch
Fishing spots
Paddle runs
- Begins Downstream Of The Borough Of Bantam, At Stoddard Road Bridge To The Confluence With The Shepaug River
- Pond Downstream Of Shepaug Reservoir Dam, Marked By Service Road Bridge To Ends In Backwaters Of Lake Lillinonah, Near Roxbury Falls
- Kent Bridge To Boardman Bridge
- Begins Below The Tailrace Of The Lower Collinsville Dam To The Route 187 Bridge
- The Confluence With The Nepaug River To A Point 0.2 Miles Below The Lower Collinsville Dam Tailrace
- New Hartford/Canton Town Line To The Confluence With The Nepaug River
Track Gravel Pit Pond Dam in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Gravel Pit Pond Dam
Where does the data for Gravel Pit Pond Dam come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Significant hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Gravel Pit Pond Dam.